Paper Under Siding

I ve opened up houses built less than 5 years previous and the tyvek was shreaded like old newspaper.

Paper under siding.

I want to replace the tar paper but i can t find it at homedepot or lowes. I ll stick with tried and true felt paper. I have seen literally hundreds of houses stripped of asbestos siding that had 15 felt under it. Basically all model codes agree on the need for a weather resistant barrier paper usually specified as 15 felt or grade d kraft paper behind stucco brick stone and other porous veneers.

These channels help direct water quickly down and away from the exterior siding material. Its primary purpose is to prevent air and water leaks that may have seeped past the vinyl exterior. I saw a new house with felt paper under the siding rather than tyvek. In fact many builders disagree on the effectiveness of house wraps altogether and while some builders will only install 15 pound asphalt saturated felt paper underneath exterior siding others swear by plastic fabric house wraps such as typar or tyvek.

They were built in the 1950s and 60s the felt was in perfect condition. Vinyl siding can be installed directly over wall sheathing wood siding or stucco. To sum it up house wrap is a lightweight paper like material that is most often used to completely cover the house directly on top of the sheathing and behind the vinyl siding. Tar paper does not offer this.

Faq s acronym s terminology to tyvek or not to tyvek that is the question. The paper requirement is typically omitted for other types of siding when they re installed over rated structural sheathing. Why do homes need house wrap. When building exterior walls with stone stucco brick when building exterior walls with stone stucco brick cedar eifs or fiber cement siding it is important to use an effective rain screen system that will provide a means for drainage and ventilation.

Building paper also called house wrap is a strong fibrous paper that blocks water and moisture from entering from the outside but allows moist air to pass through from the inside preventing a buildup of moisture inside walls that can lead to mold. Moisture will find its way into these wall systems by way of cracked mortar joints gaps or cracks in the surface of the material. Siding applied directly over tar paper creates a sandwich effect and can trap water between the siding material and the tar paper. By doing so however you miss out on the opportunity to add add energy savings to the project.

Use tyvek over building felt under siding. Should any water get past the siding properly installed felt paper. It s important that use the building paper that is recommended for your area.